How to add exception in blink-cmp for specify filetypes. E.g. Makefile requiring TAB-s instead of spaces.

[TafkaMax]

When using a TAB character in blink-cmp it tries to do autocompletion. Which command option under vim.autocomplete.blink-cmp should I use to add an exception for this:

Example exception from blink-cmp docs:

vim.api.nvim_create_autocmd('BufEnter', {
  pattern = 'Makefile',
  callback = function()
    vim.b.completion = false
  end,
})

[TafkaMax]

Well I got something right, in my home manager setup:

  programs.nvf = {
    enable = true;
    settings = {
      vim = {
        # additionalRuntimePaths
        additionalRuntimePaths = [
          ./nvim-fix-makefile
        ];

      # Neovim supports in-line syntax highlighting for multi-line strings.
      # Simply place the filetype in a /* comment */ before the line.
      luaConfigRC.nvim-fix-makefile = /* lua */ ''
        -- Call the Lua module from ./nvim/lua/nvim-fix-makefile
        -- via an autocmd
        vim.api.nvim_create_autocmd('BufEnter', {
          pattern = 'Makefile',
          callback = function()
            vim.b.completion = false
          end
        })
      '';
      };
  };
};

Example autocmd taken from: https://cmp.saghen.dev/recipes#disable-per-filetype-buffer

[TafkaMax]

But still, I can't seem to get the characters to be tabs.

[TafkaMax]

I also have editorconfig enabled with the following:

{ ... }: {
  editorconfig = {
    enable = true;
    settings = {
      "*" = {
        charset = "utf-8";
        end_of_line = "lf";
        trim_trailing_whitespace = true;
        insert_final_newline = true;
        max_line_width = 78;
        indent_style = "space";
        indent_size = 4;
      };
      "Makefile" = {
        indent_style = "tab";
      };
      "*.{yml,yaml}" = {
        indent_size = 2;
      };
      "*.json" = {
        indent_size = 2;
      };
      "*.nix" = {
        indent_size = 2;
      };
    };
  };
}

[TafkaMax]

Seems I was barking at the wrong tree. I tried to use source .env.common in Makefile, but it is include